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Permit No. VA0088641
Page 19 of 42
likelihood of receiving illicit discharges:
4) Each observation point screened may be counted as one station (outfall) screening activity equivalent
and counted towards the requirements of Part I.B.2.l)1), however, at least 50% of the minimum annual
screening events must include station (outfall) screening;
5) Illicit discharges reported by the public and subsequent investigations may not be counted as
screening events; however, once the resolution of the investigation and the date the investigation was
closed has been documented, an observation point may be established for future screening events;
and
6) The permittee’s dry weather screening program shall use a checklist or mechanism to track the
following information for dry weather screening events:
(a) The unique outfall identifier for the outfall or observation point;
(b) Indication a minimum of 72 hours has passed since the last precipitation event;
(c) Site descriptions (e.g., conveyance type and dominant watershed land uses);
(d) Observed indicators of possible illicit discharge events such as, floatables, deposits, stains, and
vegetative conditions (e.g., dying or dead vegetation, excessive vegetative growth, etc.);
(e) Whether or not a discharge was observed;
(f) If a discharge was observed, the visual characteristics of the discharge (e.g., odor, color, clarity)
and the physical condition of the outfall; and
(g) For observation points, the location, downstream outfall unique identifier, and risk factors or
rationale for establishing the observation point.
SPECIFIC REPORTING REQUIREMENTS:
Each annual report shall include a list of locations upon which dry weather screening was
conducted, the results and any follow-up actions including maintenance and/or repair of
infrastructure or outfalls performed as a result of the dry weather screening.
m) Infrastructure Coordination – The permittee shall coordinate with the Virginia Department of
Transportation (VDOT) regarding issues of MS4 physical-interconnectivity as described below:
1) Annual Coordination Meeting – The permittee shall meet annually with VDOT for purposes of overall
coordination on priority issues for the permittee’s MS4 Program Plan (including operations and
maintenance elements) and TMDL action planning relevant to the interconnectivity of the MS4s.
2) Mapping – The permittee shall inform VDOT of the status of its mapping program, identifying any
uncertainty regarding ownership or actual location of MS4 components associated with the physically-
interconnected MS4s, and working to resolve such uncertainty. The permittee shall coordinate with
VDOT to identify any areas within the permittee’s municipal boundaries that drain to the VDOT MS4.
3) Chesapeake Bay TMDL Action Plans – The permittee shall inform VDOT of the means, methods, and
schedule by which the permittee will implement the reductions required by the Chesapeake Bay TMDL
Special Condition (Part I.D.1) when those means and methods may impact the physically-
interconnected MS4s. The parties are encouraged to cooperate with one another where the siting or
design of best management practices (BMPs) may be accelerated or otherwise improved by mutual
cooperation.
4) The permittee shall coordinate with VDOT to identify any areas within the permittee’s municipal
boundaries that drain to the VDOT MS4 and are unaccounted for in the Chesapeake Bay TMDL Action
Plan developed by VDOT or the permittee. The unaccounted areas shall be quantified (acres) in the
Chesapeake Bay TMDL Action Plan submitted by the permittee.
5) Other TMDL Action Plans – The permittee shall inform VDOT of TMDL Action Plans and majorJump to an indexed page (43 of 43)